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1. 发明授权

US08712782B2 Method and apparatus to determine encoding mode of audio signal and method and apparatus to encode and/or decode audio signal using the encoding mode determination method and apparatus 有权
公开(公告)号：US08712782B2
公开(公告)日：2014-04-29
申请号：US11939074
申请日：2007-11-13
申请人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee
发明人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee
IPC分类号： G10L21/00 , G10L19/22 , G10L19/00 , G10L19/005 , G10L19/02 , G10L19/18
摘要： A method and apparatus to determine an encoding mode of an audio signal, and a method and apparatus to encode an audio signal according to the encoding mode. In the encoding mode determination method, a mode determination threshold for the current frame that is subject to encoding mode determination is adaptively adjusted according to a long-term feature of the audio signal for a frame (the current frame) that is subject to encoding mode determination, thereby improving the hit rate of encoding mode determination and signal classification, suppressing frequent oscillation of an encoding mode in frame units, improving noise tolerance, and improving smoothness of a reconstructed audio signal.

2. 发明授权

US08340962B2 Method and apparatus for adaptively encoding and decoding high frequency band 有权
标题翻译：用于自适应编码和解码高频带的方法和装置
公开(公告)号：US08340962B2
公开(公告)日：2012-12-25
申请号：US13220193
申请日：2011-08-29
申请人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
发明人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： G10L19/12
CPC分类号： G10L21/038
摘要： Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.
摘要翻译：提供了一种用于对音频信号进行编码和解码的方法和装置。根据本申请，通过使用低于预设频带的低频信号，在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。因此，即使当通过使用少量位来对音频信号进行编码或解码时，高频信号的声音质量也不会恶化，从而可以使编码效率最大化。

3. 发明授权

US08219393B2 Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same 有权
标题翻译：用于音频信号的错误隐藏方法和装置以及使用其的音频信号的解码方法和装置
公开(公告)号：US08219393B2
公开(公告)日：2012-07-10
申请号：US11930752
申请日：2007-10-31
申请人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
发明人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
IPC分类号： G10L21/00
CPC分类号： G10L19/005 , G10L19/0212 , G10L19/022 , H03M13/00
摘要： An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
摘要翻译：一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

4. 发明授权

US08010352B2 Method and apparatus for adaptively encoding and decoding high frequency band 有权
标题翻译：用于自适应编码和解码高频带的方法和装置
公开(公告)号：US08010352B2
公开(公告)日：2011-08-30
申请号：US11766331
申请日：2007-06-21
申请人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
发明人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： G10L19/12
CPC分类号： G10L21/038
摘要： Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.
摘要翻译：提供了一种用于对音频信号进行编码和解码的方法和装置。根据本申请，通过使用低于预设频带的低频信号，在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。因此，即使当通过使用少量位来对音频信号进行编码或解码时，高频信号的声音质量也不会恶化，从而可以使编码效率最大化。

5. 发明申请

US20070271480A1 METHOD AND APPARATUS TO CONCEAL ERROR IN DECODED AUDIO SIGNAL 有权
标题翻译：解码音频信号中的隐含错误的方法和装置
公开(公告)号：US20070271480A1
公开(公告)日：2007-11-22
申请号：US11749249
申请日：2007-05-16
申请人： Eun-mi OH , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
发明人： Eun-mi OH , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： G06F11/00
CPC分类号： G10L19/005
摘要： A method and apparatus to decode audio data constructed with a plurality of layers. An error concealment method of process a decoded bitstream selects one of a frequency domain and a time domain in order to conceal the errors, detects a position where the errors exist in a frame when the error concealment method in the frequency domain is selected, and conceals the errors only in a segment after the detected position.
摘要翻译：一种解码由多层构成的音频数据的方法和装置。处理解码比特流的错误隐藏方法选择频域和时域中的一个以隐藏错误，当选择频域中的错误隐藏方法时，检测在帧中存在错误的位置，并且隐藏检测到位置之后的错误。

6. 发明授权

US07498959B2 Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal 失效
标题翻译：宽带解码的装置和方法，用于产生高频带信号来合成解码的激励信号
公开(公告)号：US07498959B2
公开(公告)日：2009-03-03
申请号：US11766322
申请日：2007-06-21
申请人： Kang-eun Lee , Eun-mi Oh , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
发明人： Kang-eun Lee , Eun-mi Oh , Ho-sang Sung , Chang-yong Son , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： H03M7/12
CPC分类号： G10L19/0208 , G10L21/038
摘要： Encoding and/or decoding a wideband signal produces high frequency band spectra from low frequency band spectral information. Linear prediction filter coefficients are determined for the entire wideband spectrum of an input signal. An energy value in each of a plurality of sub-bands in the high frequency band is determined and encoded. The short-term correlation removed input signal is then down-sampled to form a low frequency band signal. At a decoder, the high frequency band signal is generated using the encoded low frequency band signal. The energy in each sub-band of the high frequency band is adjusted using the encoded energy value. Thus, the spectral envelope for the entire wideband signal is synthesized and decoded using linear predictive synthesis.
摘要翻译：编码和/或解码宽带信号从低频带频谱信息产生高频带频谱。对于输入信号的整个宽带谱确定线性预测滤波器系数。确定并编码高频带中的多个子带中的每一个中的能量值。然后将短期相关去除输入信号进行下采样以形成低频带信号。在解码器处，使用编码的低频带信号产生高频带信号。使用编码的能量值来调整高频带的每个子带中的能量。因此，使用线性预测合成来合成和解码整个宽带信号的频谱包络。

7. 发明授权

US08676569B2 Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same 有权
标题翻译：用于音频信号的错误隐藏方法和装置以及使用其的音频信号的解码方法和装置
公开(公告)号：US08676569B2
公开(公告)日：2014-03-18
申请号：US13544203
申请日：2012-07-09
申请人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
发明人： Eun-mi Oh , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-hoe Kim , Kang-eun Lee
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/0212 , G10L19/022 , H03M13/00
摘要： An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
摘要翻译：一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

8. 发明申请

US20080270124A1 METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL 有权
标题翻译：编码和解码音频/语音信号的方法和装置
公开(公告)号：US20080270124A1
公开(公告)日：2008-10-30
申请号：US11872116
申请日：2007-10-15
申请人： Chang-yong SON , Eun-mi Oh , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee , Ki-hyun Choo
发明人： Chang-yong SON , Eun-mi Oh , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee , Ki-hyun Choo
IPC分类号： G10L21/00
CPC分类号： G10L19/00 , G10L19/025
摘要： Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution.
摘要翻译：提供了一种对音频/语音信号进行编码的方法，该方法包括根据输入信号中的攻击位置来确定帧的可变长度，即输入信号的处理单元; 将所述输入信号的每个帧变换为频域并将所述帧划分为多个子频带; 并且如果确定在频域中编码子频带的信号，则对频域中的子频带的信号进行编码，并且如果确定子频带的信号被编码在一个时间域，将子频带的信号逆变换到时域，并对时域中的逆变换信号进行编码。根据本发明，可以通过控制时间分辨率和频率分辨率来有效地编码音频/语音信号。

9. 发明申请

US20080147414A1 METHOD AND APPARATUS TO DETERMINE ENCODING MODE OF AUDIO SIGNAL AND METHOD AND APPARATUS TO ENCODE AND/OR DECODE AUDIO SIGNAL USING THE ENCODING MODE DETERMINATION METHOD AND APPARATUS 审中-公开
标题翻译：用于确定音频信号编码模式的方法和装置以及使用编码模式确定方法和装置来编码和/或解码音频信号的方法和装置
公开(公告)号：US20080147414A1
公开(公告)日：2008-06-19
申请号：US11939074
申请日：2007-11-13
申请人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee
发明人： Chang-yong Son , Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim , Ho-sang Sung , Kang-eun Lee
IPC分类号： G10L19/06
CPC分类号： G10L19/20 , G10L25/78
摘要： A method and apparatus to determine an encoding mode of an audio signal, and a method and apparatus to encode an audio signal according to the encoding mode. In the encoding mode determination method, a mode determination threshold for the current frame that is subject to encoding mode determination is adaptively adjusted according to a long-term feature of the audio signal for a frame (the current frame) that is subject to encoding mode determination, thereby improving the hit rate of encoding mode determination and signal classification, suppressing frequent oscillation of an encoding mode in frame units, improving noise tolerance, and improving smoothness of a reconstructed audio signal.
摘要翻译：一种确定音频信号的编码模式的方法和装置，以及根据编码模式对音频信号进行编码的方法和装置。在编码模式确定方法中，根据用于编码模式的帧（当前帧）的音频信号的长期特征，自适应地调整用于进行编码模式确定的当前帧的模式确定阈值确定，从而提高编码模式确定和信号分类的命中率，以帧为单位抑制编码模式的频繁振荡，提高噪声容限并提高重构音频信号的平滑度。

10. 发明申请

US20080140428A1 METHOD AND APPARATUS TO ENCODE AND/OR DECODE BY APPLYING ADAPTIVE WINDOW SIZE 审中-公开
标题翻译：通过应用自适应窗口大小来编码和/或解码的方法和装置
公开(公告)号：US20080140428A1
公开(公告)日：2008-06-12
申请号：US11949925
申请日：2007-12-04
申请人： Ki-hyun Choo , Eun-mi Oh , Chang-yong Son , Jung-hoe Kim
发明人： Ki-hyun Choo , Eun-mi Oh , Chang-yong Son , Jung-hoe Kim
IPC分类号： G10L19/00 , G10L19/02
CPC分类号： G10L19/022
摘要： An apparatus to process an audio signal includes an encoder to determine a variable window size of sub bands of a frame of an audio signal, to transform the sub bands according to the variable window size from a first domain to a second domain, to quantize the transformed sub bands, and to multiplex the quantized sub bands and information on the variable window size corresponding the respective sub bands.
摘要翻译：一种用于处理音频信号的装置包括：编码器，用于确定音频信号的帧的子频带的可变窗口大小，以便根据可变窗口尺寸从第一域到第二域变换子带，以量化并且对量化的子带和关于对应于各个子带的可变窗口大小的信息进行多路复用。

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